<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <p>
      请问一个 yes/no 的问题：
      <input v-model="question" />
    </p>
    <p>{{ answer }}</p>
  </div>
  <script type="module">
    // https://www.yesno.wtf/api  一个会返回yes/no的api
    import { createApp, ref, watch } from './node_modules/vue/dist/vue.esm-browser.js'
    
    createApp({
      setup () {
        const question = ref('')
        const answer = ref('')

        watch(question, async (newv,oldv) => {
          const resp = await fetch('https://www.yesno.wtf/api')
          const data = await resp.json();
          answer.value = data.answer
        })

        return {
          question,
          answer
        }
      }
    }).mount('#app')
  </script>
</body>
</html>